Science - Electricity

Question 1

What materials make the best conductors of electricity?

Answer 1

metals, such as silver, gold, copper, and aluminum

Question 2

How is a series circuit different from a parallel circuit?

Answer 2

A series circuit only has one path, but a parallel circuit has different paths for the electricity to flow.

Question 3

A _____ is a path through which electricity flows.

Answer 3

circuit

Question 4

When you turn the switch “on”, the circuit is _____ and the path is unbroken (electricity will flow through it).

Answer 4

closed

Question 5

When you turn the switch to “off”, the path is _____ or broken (electricity stops flowing).

Answer 5

open

Question 6

A circuit has a switch, a wire, a battery, and a bulb. When the switch is flipped, the light turns on. Which energy is used in this circuit when it is closed?

Answer 6

Current electricity is transformed into light energy.

Question 7

Mrs. Migliore rubbed an air-filled balloon on her hair. She then touched the balloon to the wall and the balloon stuck to it. What made the balloon stick to the wall?

Answer 7

The static electricity on the balloon had an opposite charge as the wall, so the opposite charges attract and the balloon stuck to the wall.

Question 8

Four light bulbs are connected in a series circuit. What will happen to the other bulbs if bulb 3 burns out?

Answer 8

The rest of the bulbs will go out (will not light) because the circuit has been interrupted.

Question 9

Four light bulbs are connected in a parallel circuit. What will happen to the other bulbs if bulb 2 and bulb 3 burns out?

Answer 9

The other two bulbs will continue to light, because a parallel circuit has multiple paths for the electricity to flow.

Question 10

Name three materials that are good electrical insulators.

Answer 10

glass, plastic, and rubber are good insulators

Question 11

_____ is a form of electricity in which electrical charges collect on a surface or an object.

a. Circuit
b. Electromagnet
c. Current electricity
d. Static electricity

Answer 11

d. Static electricity

Question 12

A material through which electricity can flow easily is called a/an _____.

a. insulator
b. circuit
c. conductor
d. charge

Answer 12

c. conductor

Question 13

A material that slows or stops the flow of electricity is called a/an _____.

a. insulator
b. circuit
c. conductor
d. charge

Answer 13

a. insulator

Question 14

A temporary magnet that is made by an electric current is called a/an ______.

a. insulator
b. conductor
c. permanent magnet
d. electromagnet

Answer 14

d. electromagnet

Question 15

_____ is a form of electricity in which electrical charges move from one place to another.

a. Current electricity
b. Static electricity
c. Moving electricity
d. Electromagnets

Answer 15

a. Current electricity

Question 16

A _____ is a path through which controlled electrical current flows.

a. static trail
b. conductor
c. circuit
d. current path

Answer 16

c. circuit

Question 17

What are the two types of electrical charges?

Answer 17

positive and negative

Question 18

What types of charges attract? What types of charges repel?

Answer 18

Opposite charges attract; Like charges repel.

Question 19

Electrical energy can change or transform into other types of energy. Name 4 types it can change into.

Answer 19

light, temperature changes (heat or cooling), motion, and sound energy

Question 20

_____ electricity is caused by a build up of charge, while current electricity happens when electricity _____.

a. Positive; negative
b. Electromagnet; circuit
c. Static; flows
d. Circuit; conductor

Answer 20

c. Static; flows

STATIC electricity is caused by a build up of charge, while current electricity happens when electricity FLOWS.